Firefighters look over the site of a building explosion in New York, Friday, March 14, 2014. Using sound devices to probe for voices and telescopic cameras to peer into small spaces, workers searching a pile of rubble from a gas explosion in the East Harlem section of Manhattan, continued to treat it as a rescue operation, holding onto the possibility of finding survivors from a blast that brought down two apartment buildings and killed at least eight people. (AP Photo/Seth Wenig)

Firefighters look over the site of a building explosion in New York, Friday, March 14, 2014. Using sound devices to probe for voices and telescopic cameras to peer into small spaces, workers searching a pile of rubble from a gas explosion in the East Harlem section of Manhattan, continued to treat it as a rescue operation, holding onto the possibility of finding survivors from a blast that brought down two apartment buildings and killed at least eight people. (AP Photo/Seth Wenig)

Rick Del Rio, pastor of Abounding Grace church in Manhattan, and New York City Public Advocate Letitia James, display a damaged but intact Bible they said was recovered in the rubble of the Spanish Christian Church, Saturday, March 15, 2014 in New York. The church was in one of the buildings destroyed in the March 12 gas explosion that leveled two building and killed eight people. (AP Photo/Jim Fitzgerald)

Firefighters look over the site of a building explosion in New York, Friday, March 14, 2014. Using sound devices to probe for voices and telescopic cameras to peer into small spaces, workers searching a pile of rubble from a gas explosion in the East Harlem section of Manhattan, continued to treat it as a rescue operation, holding onto the possibility of finding survivors from a blast that brought down two apartment buildings and killed at least eight people. (AP Photo/Seth Wenig)

Firefighters look over the site of a building explosion in New York, Friday, March 14, 2014. Using sound devices to probe for voices and telescopic cameras to peer into small spaces, workers searching a pile of rubble from a gas explosion in the East Harlem section of Manhattan, continued to treat it as a rescue operation, holding onto the possibility of finding survivors from a blast that brought down two apartment buildings and killed at least eight people. (AP Photo/Seth Wenig)

People hold up candles while praying during a vigil for the victims of an explosion, Thursday, March 13, 2014 in New York. Rescuers working amid gusty winds, cold temperatures and billowing smoke pulled four additional bodies from the rubble of two New York City apartment buildings, raising the death toll to at least seven from a gas leak-triggered explosion that reduced the area to a pile of smashed bricks, splinters and mangled metal. The explosion Wednesday morning in Manhattan’s East Harlem injured more than 60 people. (AP Photo/Julio Cortez)